Photographic-plate lifter



(No Model.)

S. 0. SMITH. PHOTOGRAPHIO PLATE LIFTER. No. 572,663. Patented Dec. 8,1896.

M/T/VESSES: MWENTOH W By UNITED STATES PATENT OFFICE.

SAMUEL CRAIV FORD SMITH, OF PHILADELPHIA, PENNSYLVANIA.

PHOTOGRAPHlC-PLATE LIFTER.

SPECIFICATION forming part of Letters Patent No. 572,663, dated December8, 1896.

Application filed November 30, 1895. Serial No. 570,636. (No model.)

To all whOm, it may concern-.-

Be it known that I, SAMUEL CRAWFORD SMITH, a citizen of the UnitedStates, residing in Philadelphia, in the county of Philadelphia andState of Pennsylvania, have invented a new and useful Photo-PlateLifter, of which the following is-a specification.

My invention relates to improvements in photographic-plate liftersoperating in conneetion with photographers developing and fixingsolution trays.

The object of my improvement is to lift in the simplest manner the platefrom the bottom of the photographic tray Without staining the hands andwithout injury to the film, as well as to create a constant ebb and flowof the chemical over the plate in course of development. I attain thisobject by the mech anism illustrated in the accompanying drawings, inWhich Figure 1 shows the metal plate before bending. Fig. 2 shows thesame with the openings left after cutting out flaps to bind the spring.Fig. 3 shows the U'-shaped wire attachment. Fig. 4 shows the metal platebent and the method of attaching the U-shaped wire by flaps cut in themetal plate. Figs. 5 and 6 show the plate-lifter complete. Fig. '7 showsa photographic tray with plate-lifters in place. Fig. 8 shows aphotographic tray with a plate being raised by the plate-lifter,operated by the thumb.

I The device consists of an oblong metal plate A, cut in the shapeindicated by Fig. 1, with apertures B B and O O stamped before the metalplate is bent, as shown by Fig. 2. This plate is bent to an angle ofninety degrees or less and attached at that angle to a U -shaped wire atDD, Fig. 3, the wire being curved at F F with spring-pressure at E E.The method of attaching this U-shaped wire to the bent metal plate isshown by Fig. 4:. The flaps II II, Fig. i, are turned from the apertures13 B to receive the wire and are held at the ends by the flaps X and Gr,which are turned from the apertures O O. The wire is thus clasped to themetal plate, as in Figs. 5 and 6.

Having fully described my invention, what I claim, and desire to secureby Letters Patent, is

In a photographic-plate lifter, the combination with an oblong piece ofsheet metal bent to an angle of ninety degrees or less, of the U -shapedwire attached at its base to the angle of the sheet-metal piece andhaving its arms bent to form spring-clasps for engaging the side of thephotographic tray, substan tially as described.

SAMUEL CRAIVFORD SMITH.

IVitnesses:

GEORGE IV. CLEMENT, R. STUART SMITH.

